Add Altera Cyclone 10 LP 10CL080 support

[0xDRRB]

Very few changes here, but good results :)

$ openFPGALoader -c usb-blaster --detect
empty
index 0:
        idcode 0x20f60dd
        manufacturer altera
        family cyclone 10 LP
        model  10CL080
        irlength 10

$ openFPGALoader -v -c usb-blaster --fpga-part 10CL080 \
  build/qmtech_cyclone10_starterkit/gateware/qmtech_cyclone10_starterkit.rbf 
empty
found 1 devices
index 0:
        idcode 0x20f60dd
        manufacturer altera
        family cyclone 10 LP
        model  10CL080
        irlength 10
File type : rbf
Load SRAM: [==================================================] 100.00%

[0xDRRB]

Sorry, I don't know how to make the spiOverJtag_10cl080484.rbf.gz file without a QSF file :(

[trabucayre]

Applied. Thanks @0xDRRB!
To adds a new spiOverJtag bitstream for altera device everything must be done in spiOverJtagsubdirectory.
It requires to have edalize installed (but I think to move to LiteX framework to simplify build.py script).

Adding a entry may be resumed by : 5ac611c

(I know a dedicated README.md is required ;-) )